Few memorials to forgotten victim: Gunman's mother

The names of Nancy Lanza and Adam Lanza are attached to candy at a memorial to the Newtown shooting victims in Newtown, Conn., Thursday, Dec. 20, 2012. Nancy Lanza's 20-year-old son, Adam Lanza, killed her at their home in Newtown, Conn., last week and then drove to Sandy Hook Elementary School, where he killed 20 children and six school employees before committing suicide. (AP Photo/Seth Wenig)
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The names of Nancy Lanza and Adam Lanza are attached to candy at a memorial to the Newtown shooting victims in Newtown, Conn., Thursday, Dec. 20, 2012. Nancy Lanza's 20-year-old son, Adam Lanza, killed her at their home in Newtown, Conn., last week and then drove to Sandy Hook Elementary School, where he killed 20 children and six school employees before committing suicide. (AP Photo/Seth Wenig)
/ AP

Adam Lanza was wearing all black, with an olive-drab utility vest, during the school attack. Investigators have found no letters or diaries that could explain the rampage.

Friends and acquaintances have described him as intelligent, but odd and quiet.

Friends said he would stare down at the floor and not speak when she brought him into a local pizzeria. They knew that he'd switched schools more than once and that she'd tried home schooling him. But while she occasionally expressed concern about his future during evenings at the bar, she never complained.

"I heard her as a parent. I always said that I wouldn't want to be in her shoes. But I thought, `Wow. She holds it well,'" said Jon Tambascio, son of the pizzeria operator.

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Contributing to this report were Associated Press writers Michael Melia, John Christoffersen and David Klepper in Newtown; Jim Fitzgerald in Katonah, N.Y.; and Frederic J. Frommer in Washington.